AKB48 sister group HKT48 will be making their major label debut with Universal Music in 2013.The group's big news was announced on November 8th at a performance at the HKT48 Theater in Hakata, Fukuoka.HKT48 made their theater debut on November 26th of last year. They are the 3rd AKB48 sister group to make their debut, with SKE48 and NMB48 coming before them.HKT48 is the youngest of the AKB48 sister groups, averaging only 14.7 years old among their members.Details about the HKT48's debut have not been revealed. Source: Jpopasia